The Ransom Center acquired Mamet’s archive in 2007. The collection is made up of more than 300 boxes of material, covers his entire career through 2007, and contains manuscripts, journals, office and production files, correspondence, and multiple drafts of each of his works, including the acclaimed plays American Buffalo (1975) and Glengarry Glen Ross (1982) and screenplays The Untouchables (1987), The Spanish Prisoner (1997), and Wag the Dog (1997). These materials record the writing and revision of all of his published texts, as well as several that are unpublished or unfinished.